no start problem

[7mCressida]

so heres my problems, i bought the car with 60k on the odometer, car had oil leaks out the ass, plus the headgasket was blown, but the car ran! i decided to swap that motor out for my fresh rebuilt 7mgte out of my cressida that never had ran before. now that the new motor is in the car, it cranks but doesnt start, i re-used the same wiring harness that was in the car, that actually started the previous motor. Ive searched everywhere and followed the troubleshooting tips out of the actual toyota service manual, but still no spark. i have plenty of fuel because i can smell it when i get out the driver seat.

new motor that is now in the supra has never been started, but I have 12v at the ignition coil, continuity tests checks out fine, at the igniter, power transistor, and the coil. i have plenty of grounds. the cps connector wiring was frayed but i fixed and erased code 12 out of the system. any other ideas???

 

[7mCressida]

anyone? tryin to help a bro out???? MRSO meet is comin up and i got to get this car goin!!!!

 

[IBoughtASupra]

Spark?
Fuel?
Timing?

You can spray starting fluid in the throttle body and see if it start, then you will know your issue.

 

[7mCressida]

i got plenty of fuel, timing is perfect, and i tried spraying starter fluid but nothing. i just ordered new spark plugs today, i ohmed out the wires and they are within spec.

 

[IBoughtASupra]

If the timing is correct and you spray starting fluid and it doesn't start, you don't have spark.

Tried the old crank and giggle trick? Have someone crank while you giggle the CPS plug wires, common issue. I know you said you did a rewire but it's worth a try.

 

[austin]

If the timing is correct and you spray starting fluid and it doesn't start, you don't have spark.

Tried the old crank and giggle trick? Have someone crank while you giggle the CPS plug wires, common issue. I know you said you did a rewire but it's worth a try.

I can safely say I have never tried to giggle my car anywhere before.

 

[7mCressida]

aight ima give it a try today

 

[7mCressida]

Wiggled the cps and ignition coil wires just to find out the wires at the ignition coil connector were broken. So i fixed those. Now i get 12v when cranking and no code 14. Still have no spark. But i do have code 51 which i think is the ac because itbisnt hooked up yet?

Ecu is getting power when testimg for voltage across batt and e1. Any other suggestions

 

[MINA]

when u re wired the cps plug did u match up the colors

if so thats wrong

two wires get flipped to get spark at the cps plug

 

[7mCressida]

hmm ima have to check that out but im sure i did match the colors right up

 

[JStoked]

You do have a cel light wright?

 

[jetjock]

^ He has codes. That makes you rong :icon_razz

 

[7mCressida]

only one now is 51, no other codes, checked the cps wires, i wired them all right, so now im totally clueless unless these new spark plugs monday magically fix this problem

 

[RJ DawgBo Hamp]

did it does the job?? is so then i guess i need get me another set of plugs again :frown:

 

[7mCressida]

nope put the new plugs in today nothing happened, although the old plugs were all rusty and corroded, now the igniter is making some kind of noise so, im going to ground the igniter and see what happens next.

 

[AJ'S 88NA]

Did you check the ECU grounds connected to the intake manifold?

 

[7mCressida]

yea i added another 5 grounds to the motor. its well grounded i should say lol. i got power at the ecu, so i know the ecu cant possibly be bad can it. when u crank it over the rpm needle moves a bit.

 

[7mCressida]

so 3 months later, i never had time since then, works been killin me. i fixed the problem, went through 2 faulty cps, car now runs like a champ!